A method of heavy measurement of ship loading based on the sonar system

Abstract

The invention discloses a ship load-carrying measuring method based on a sonar system. Firstly, the sonar system is adopted to scan positions of all points of the bottom of a ship body, then the scanning data of all points of the bottom of the ship body is sent to a host computer, and the host computer adopts the modeling volume-obtaining algorithm to build a three-dimensional model of the underwater part of the ship body and calculates the drainage volume of the ship body, so that the drainage weight is obtained, and finally, the ship load-carrying is calculated according to the buoyancy law.According to the ship load-carrying measuring method based on the sonar system, the independent integrated sonar system is adopted for ship body scanning, then modeling is conducted and the ship load-loading is calculated, the scanned data is accurate, and the ship volume precision is high after modeling, so that more accuracy of the measured data of the ship load-loading is guaranteed.

Description

technical field [0001] The invention relates to the field of ship load measurement, in particular to a ship load measurement method based on a sonar system. Background technique [0002] The most commonly used method in the market is to measure the weight of the ship by observing the waterline. This method requires the observer to have certain professional knowledge and needs to cooperate with the hydrostatic curve. It is not only difficult to read but also difficult to read accurately. Therefore, this method can only deal with occasions where the accuracy is generally not high. [0003] In addition, it has been proposed to use a small ultrasonic module installed underwater or a laser array device to scan the hull to obtain the displacement volume, (quoted from a patent: a ship displacement measurement device and its measurement method; Patent No.: CN 101216338A), but the small Ultrasonic modules and lasers are highly susceptible to the influence of water pressure and water...

AI Technical Summary

Problems solved by technology

[0002] The most commonly used method in the market is to measure the weight of the ship by observing the waterline. This method requires the observer to have certain professional knowledge and needs to cooperate with the hydrostatic curve. It is not only difficult to read but also difficult to read accurately. Unclear and the impact of the hull swing, so this method can only be used in occasions that generally do not require high accuracy

[0003] In addition, it has been proposed to use a small ultrasonic module or laser array device installed underwater to scan the hull to obtain the displacement volume, (quoted from the patent: a ship displacement measurement device and its measurement method; Patent No.: CN 101216338A), but the small Ultrasonic modules and lasers are highly susceptible to the influence of water pressure and water quality underwater, resulting in insufficient concentration of their directionality and the inability to accurately obtain the distance from each point on the hull surface to the device. In addition, multiple ultrasonic sensor modules need to be connected in parallel and need to be connected together. The scanning of the hull can only be realized by the movement of the hull through the upper part of the ultrasonic sensor array. The shaking of the hull during the movement or the unsatisfactory route will have a great impact on the measurement accuracy.

Images